:root {
    --primary-bg: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --accent-blue: #38bdf8;
    --accent-green: #10b981;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --border-color: rgba(148, 163, 184, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
}

.hospital-name {
    font-size: 0.9rem;
    color: var(--accent-blue);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.project-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
}

.status-badge {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-blue);
    padding: 0.4rem 1rem;
    border-radius: 99px;
    font-size: 0.8rem;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

main {
    flex: 1;
    padding: 2rem 3rem;
}

.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    height: calc(100vh - 200px);
}

.panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--glass-shadow);
}

.panel-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.file-info {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.image-viewer {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 1rem;
    background: #000;
}

.image-viewer img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.controls {
    display: flex;
    gap: 1rem;
}

select {
    background: rgba(15, 23, 42, 0.6);
    color: white;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    outline: none;
}

button {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.4);
}

button:active {
    transform: translateY(0);
}

.placeholder-text {
    color: var(--text-dim);
    text-align: center;
    padding: 2rem;
}

.hidden {
    display: none !important;
}

/* Loader Styles */
.loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(56, 189, 248, 0.1);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

footer {
    padding: 1.5rem 3rem;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}